Motor brush spring subassembly
US5373210A · kind A · utility
10Cited by
15References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1993 |
| Grant date | Dec 13, 1994 |
| Priority date | — |
| Expiry date | Mar 5, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/148
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric motor brush subassembly includes a housing base, a housing cover, a brush, and a constant force spring. The brush is mounted between the housing base and the cover with the coil of the spring mounted adjacent to the outer end of the brush. The axis of the coil is disposed at a right angle with respect to the length of the brush and an unrolled spring segment extends along a side of the brush and is fixed in a slot in the cover. The spring exerts a force against the brush to bias the brush against the motor commutator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.